334584
In earthworm, pharyngeal nephridia are present in the segments
1 \({{\rm{5}}^{{\rm{th}}}}\), \({{\rm{6}}^{{\rm{th}}}}\) and \({{\rm{7}}^{{\rm{th}}}}\)
2 \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\)
3 3 - last
4 15 - last
Explanation:
Pharyngeal nephridia are present as three paired tufts in the segments \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\). The ducts of \({{\rm{4}}^{{\rm{th}}}}\) and \({{\rm{5}}^{{\rm{th}}}}\) nephridia open into pharynx, while that of \({{\rm{6}}^{{\rm{th}}}}\) nephridia open into buccal cavity.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334585
Match the columns I and II with respect to earthworm Column I Column II A Buccal cavity P 5-7 segments B Oesophagus Q 1-3 segments C Gizzard R 8-9 segments
334586
The main role of calciferous glands of earthworm is _____and present in _____
1 Secreting mucus, stomach
2 Breaking food particles, intestine
3 Absorption of nutrients, intestine
4 Neutralising the humic acid, stomach
Explanation:
The main role of calciferous glands, present in the stomach in earthworms is to neutralise the humic acid present in humus. These glands secrete calcium and carbon dioxide. Calcium neutralises acidic food and \(\mathrm{CO}_{2}\) combines with calcium to form calcite which gets excreted out with the humus through the anus.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334587
In earthworm, the location of blood glands coincide with
1 Typhlosole
2 Nerve ring
3 Pharyngeal nephridia
4 Gizzard
Explanation:
Blood glands are present on the \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. They produce blood cells and haemoglobin which is dissolved in blood plasma. Also pharyngeal nephridia, present as three paired tufts in the \({{\rm{4}}^{{\rm{th}}}}\),\({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. Hence pharyngeal nephridia coincides with blood glands in earthworm.
334584
In earthworm, pharyngeal nephridia are present in the segments
1 \({{\rm{5}}^{{\rm{th}}}}\), \({{\rm{6}}^{{\rm{th}}}}\) and \({{\rm{7}}^{{\rm{th}}}}\)
2 \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\)
3 3 - last
4 15 - last
Explanation:
Pharyngeal nephridia are present as three paired tufts in the segments \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\). The ducts of \({{\rm{4}}^{{\rm{th}}}}\) and \({{\rm{5}}^{{\rm{th}}}}\) nephridia open into pharynx, while that of \({{\rm{6}}^{{\rm{th}}}}\) nephridia open into buccal cavity.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334585
Match the columns I and II with respect to earthworm Column I Column II A Buccal cavity P 5-7 segments B Oesophagus Q 1-3 segments C Gizzard R 8-9 segments
334586
The main role of calciferous glands of earthworm is _____and present in _____
1 Secreting mucus, stomach
2 Breaking food particles, intestine
3 Absorption of nutrients, intestine
4 Neutralising the humic acid, stomach
Explanation:
The main role of calciferous glands, present in the stomach in earthworms is to neutralise the humic acid present in humus. These glands secrete calcium and carbon dioxide. Calcium neutralises acidic food and \(\mathrm{CO}_{2}\) combines with calcium to form calcite which gets excreted out with the humus through the anus.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334587
In earthworm, the location of blood glands coincide with
1 Typhlosole
2 Nerve ring
3 Pharyngeal nephridia
4 Gizzard
Explanation:
Blood glands are present on the \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. They produce blood cells and haemoglobin which is dissolved in blood plasma. Also pharyngeal nephridia, present as three paired tufts in the \({{\rm{4}}^{{\rm{th}}}}\),\({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. Hence pharyngeal nephridia coincides with blood glands in earthworm.
334584
In earthworm, pharyngeal nephridia are present in the segments
1 \({{\rm{5}}^{{\rm{th}}}}\), \({{\rm{6}}^{{\rm{th}}}}\) and \({{\rm{7}}^{{\rm{th}}}}\)
2 \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\)
3 3 - last
4 15 - last
Explanation:
Pharyngeal nephridia are present as three paired tufts in the segments \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\). The ducts of \({{\rm{4}}^{{\rm{th}}}}\) and \({{\rm{5}}^{{\rm{th}}}}\) nephridia open into pharynx, while that of \({{\rm{6}}^{{\rm{th}}}}\) nephridia open into buccal cavity.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334585
Match the columns I and II with respect to earthworm Column I Column II A Buccal cavity P 5-7 segments B Oesophagus Q 1-3 segments C Gizzard R 8-9 segments
334586
The main role of calciferous glands of earthworm is _____and present in _____
1 Secreting mucus, stomach
2 Breaking food particles, intestine
3 Absorption of nutrients, intestine
4 Neutralising the humic acid, stomach
Explanation:
The main role of calciferous glands, present in the stomach in earthworms is to neutralise the humic acid present in humus. These glands secrete calcium and carbon dioxide. Calcium neutralises acidic food and \(\mathrm{CO}_{2}\) combines with calcium to form calcite which gets excreted out with the humus through the anus.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334587
In earthworm, the location of blood glands coincide with
1 Typhlosole
2 Nerve ring
3 Pharyngeal nephridia
4 Gizzard
Explanation:
Blood glands are present on the \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. They produce blood cells and haemoglobin which is dissolved in blood plasma. Also pharyngeal nephridia, present as three paired tufts in the \({{\rm{4}}^{{\rm{th}}}}\),\({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. Hence pharyngeal nephridia coincides with blood glands in earthworm.
334584
In earthworm, pharyngeal nephridia are present in the segments
1 \({{\rm{5}}^{{\rm{th}}}}\), \({{\rm{6}}^{{\rm{th}}}}\) and \({{\rm{7}}^{{\rm{th}}}}\)
2 \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\)
3 3 - last
4 15 - last
Explanation:
Pharyngeal nephridia are present as three paired tufts in the segments \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\). The ducts of \({{\rm{4}}^{{\rm{th}}}}\) and \({{\rm{5}}^{{\rm{th}}}}\) nephridia open into pharynx, while that of \({{\rm{6}}^{{\rm{th}}}}\) nephridia open into buccal cavity.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334585
Match the columns I and II with respect to earthworm Column I Column II A Buccal cavity P 5-7 segments B Oesophagus Q 1-3 segments C Gizzard R 8-9 segments
334586
The main role of calciferous glands of earthworm is _____and present in _____
1 Secreting mucus, stomach
2 Breaking food particles, intestine
3 Absorption of nutrients, intestine
4 Neutralising the humic acid, stomach
Explanation:
The main role of calciferous glands, present in the stomach in earthworms is to neutralise the humic acid present in humus. These glands secrete calcium and carbon dioxide. Calcium neutralises acidic food and \(\mathrm{CO}_{2}\) combines with calcium to form calcite which gets excreted out with the humus through the anus.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334587
In earthworm, the location of blood glands coincide with
1 Typhlosole
2 Nerve ring
3 Pharyngeal nephridia
4 Gizzard
Explanation:
Blood glands are present on the \({{\rm{4}}^{{\rm{th}}}}\), \({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. They produce blood cells and haemoglobin which is dissolved in blood plasma. Also pharyngeal nephridia, present as three paired tufts in the \({{\rm{4}}^{{\rm{th}}}}\),\({{\rm{5}}^{{\rm{th}}}}\) and \({{\rm{6}}^{{\rm{th}}}}\) segments. Hence pharyngeal nephridia coincides with blood glands in earthworm.
